查询词典 differential method

Wu39-1,Wu43-1 and Wu50-2 were used to develop a handy extraction method of mtDNA in crucifer s on the basis of the sucrose-bedding method of mtDNA extraction and by means of four combinations of different centrifugal forces,differential centrifugation,and composition adjustment and dosage increase of buffer solution A.

以十字花科植物芸芥 Eruca sativa 、白菜型油菜 Brassica rapa 和甘蓝型油菜 Brassica napus ：武39- 1、武4 3- 1、武5 0 - 2为试材，在蔗糖衬垫法分离纯化m t DNA方法优点的基础上，通过4组不同离心力配比，采用差速离心法、改变缓冲液A的成分以及增加缓冲液的用量，建立了一种简便提取十字花科植物mt DNA方法。

Based on the domain superposition method and the differential cubature method as well as the Levy s general solution technique, a new semi-analytical solution has been developed in this paper, for free vibration analysis of moderately thick plates with abrupt thickness.

采用Mindlin中厚板理论，基于Levy解法和微分容积法，给出一种求解轴向受压的阶梯式变厚度板的自由振动问题的半解析解，板的边界条件为两对边简支、另两边任意。

This paper studies a class of cubic system with planar polynomial.We use the qualitative theory of ordinary differential equations method of analysis, reached the following conclusions of four parts: First, we analyze the quality of all critical points of the system,and draw the conditions of existence of singular integrals for the system , in front based on the analysis, using Pioncare form series method to calculate the focal value of o(0,0). Finally, we also study the behavior of critical points at infinity.

中文摘要：本文研究了一类平面三次多项式系统，我们采用常微分方程的定性理论的分析方法，得出如下四个部分结论：第一部分，分析系统所有奇点的性态，并得出系统存在奇异积分直线的条件；在前面分析的基础上，用Pioncare形式级数法，计算出了系统在奇点o(0，0)的三个焦点量；最后，研究了系统无穷远奇点的性态。

Because the therapeutic method for cytomegalovirus infection, the most common opportunistic infection, is opposed to ACR, and the CMV disease is delitescence, not specific and lack of effective method of virus detection, the differential diagnosis between CMV disease and ACR is important and difficult.

巨细胞病毒(cytomegalovirus， CMV)感染是LT术后最常见机会性感染，发病隐匿，临床表现不特异，缺乏有效的病毒检测方法，且它与ACR的治疗方法截然相反，因此两者的鉴别诊断亦非常重要。

Meshless method is a new numerical method on problem for determining solution of differential equation.

无网格法是求解微分方程定解问题的一种新数值方法。

For nonlinear harmonic oscillators systems of coordinate coupling and momentum-coupling, one obtains a group differential equations for physical parameters about flow parameter by the numerical analysis method, one finds this method can diagonalize the Hamiltonian.

通过数值分析物理参数随流参数变化规律，给出了对角化的哈密顿量。

The main content of the study includes: the policy variables are classified into two types, which are continuous policy variable and discrete policy variable, and the two variable is analyzed respectively; as to the continuous policy variable, use reasonable weighting to synthesize comprehensive policy indicator to reflect the comprehensiveness of each main policy indicator; undertake regression analysis for the comprehensive policy indicator, economic and stock market variable and get the effect of all kinds of comprehensive policy indictor variables on the economy and stock market; undertake regression analysis for data on the economic indicator and the data on the stock market and get the relationship between the economy and the stock market; use event research method to analyze its effect on the stock market and get some corresponding conclusions; structure the differential or difference equation groups on the interactive relationship among the variable economy, stock market and policy and do the difference operation and constitute simultaneous equation with the original main variables one after another; use quantitative regression method and solve the coefficient of the simultaneous equation to predict the operating tendency.

本研究主要内容包括：将政策变量划分为连续性政策变量和离散政策变量两个类型，并分别进行分析；对于连续性政策变量，采取合理的权重来合成政策综合指标，反映各主要政策指标的综合力度大小；将各政策综合指标与经济、股市变量进行回归分析，获得各类政策综合指标变量对经济、股市影响程度的大小；将经济指标数据与股市数据进行回归分析，获得经济与股市之间关系的大小；采取事件研究方法来分析其对股市的影响程度；构建关于经济、股市与政策各主要变量之间互动关系的微分或差分方程组，进行差分运算，并以此与原来各主要变量组成联立方程；运用计量回归方法，求出联立方程系数用于预测。

In recent years, some new research methods such as mordern geometric method and differential algebra method have been applied to the study of control theory according to the development of nonlinear science, and it is possible for us to solve complicated enginering systems with the development of computer science, which promotes the investigation of complicated control systems.

近年来，非线性科学的发展，特别是现代微分几何，微分代数理论的出现，为非线性控制理论的研究提供了新的工具。

Based on initial condition, during certain time span, numerical analysis method of differential equation, algebra iteration and optimization method are used to solve response of generalized system and to analyze stability of generalized system.

从初始条件出发，在一定时间长度上，采用微分方程数值积分法、代数迭代和优化方法来求解系统响应，获得非线性广义系统稳定性的数值分析方法。

The finite volume method is used to transform the controlling differential equations into the algebra ones, and the semi-implicit method for pressure-linked equations is used to solve the pressure.

同时，采用有限体积法将控制微分方程离散为代数方程，采用SIMPLE方法求解压力。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失